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( http://bdp.betfair.com/docs/GetMarketTradedVolume.html )
First: why in the response data there are matched volume associated to prices "out of range"?
For example, in:
there are many invalid prices like 10.32, 10.77, ecc.
BSP is not an explanation: those volume are before the off.
Second, and more important:
let R be a runner, p a price and t1, t2 two distinct times when we get the volume data, t1 precedes t2.
So we have v1 as the volume for runner R on price p at time t1,
and v2 as the volume for the same runner on the same price at time t2.
How could it ever be that there are situation where v2 is less than v1?
Shouldn't the matched volume data on a runner and price always increase over time?